Dead Yeast?

Brewed up a batch of RED ALE.....it is a Brewers Best kit.....had Nottingham Dry Yeast.

Pitched yeast qt 7PM Saturday evening (70 hours ago). Absolutely no activity since then.

I popped the lid to see if anything was happening....fiiguring maybe it was leaking around lid....but absolutely no activity inside.

SO I had a packet of Safale 05 and I pitched that......gave it a good stir and resealed.

I hope I did the right thing. Either way it will make beer...right!

What is the current SG? If it's the same as the OG, the added yeast should ferment it. If the SG is lower now, then the extra yeast isn't needed.

Didnt check the current SG since its only been 3 days and did not appear to be doing anything........I figure there is no harm in adding the extra yeast other than the cost of it which is miniscule compered to a wasted batch of brew!